I wrote here previously about controversies surrounding the new diagnostic criteria proposed for ASD. Perhaps the most problematic change going from the criteria in DSM-IV to DSM-V is lumping Asperger syndrome and PDD-NOS into the autism category. Some folks with Asperger like being in their own special category, while other folks worry that some kids with Asperger won’t be counted and therefore lack social services. Atw the recent INSAR meeting in Toronto, two new  field studies have tested the DSM-V criteria and found that this new system does not cause the expected problems. A more extensive report on this issue can be found on the SFARI website.
Infectious Behavior 